Abstract
The composition-distance profiles in face-centered cubic (fcc) Ni-Sn alloys at 1173, 1223, 1273, and 1323 K were measured by means of electronic probe microanalysis (EPMA) using Ni/Ni-7.3at.%Sn diffusion couples. Based on the available thermodynamic information and various experimental diffusion coefficients, the atomic mobilities of Ni and Sn in fcc Ni-Sn alloys were assessed as a function of temperature and composition in terms of the CALPHAD method using the DICTRA® software package. Optimized mobility parameters are presented. Comparisons between the calculated and measured diffusion coefficients show that most of the experimental information can be reproduced reasonably. The obtained mobility parameters can also predict satisfactorily the composition-distance profiles of the Ni/Ni-7.3at.%Sn diffusion couples determined in the present work.
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Acknowledgments
This work was financially supported by National Science Foundation of China (Grant No. 50371104, 50671122). The authors J. Wang, H.S. Liu, L.B. Liu, and Z.P. Jin would like to thank Mr. S.T. Li, Shan-Dong University, for his assistance in EPMA.
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Wang, J., Leinenbach, C., Liu, H.S. et al. Diffusion and Atomic Mobilities in fcc Ni-Sn Alloys. J. Phase Equilib. Diffus. 31, 28–33 (2010). https://doi.org/10.1007/s11669-009-9607-x
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DOI: https://doi.org/10.1007/s11669-009-9607-x